U.S. patent number 9,189,970 [Application Number 13/877,948] was granted by the patent office on 2015-11-17 for miniature of washing machine for exhibition.
This patent grant is currently assigned to LG Electronics Inc.. The grantee listed for this patent is Hyejeong Kim, Inhyouk Seo. Invention is credited to Hyejeong Kim, Inhyouk Seo.
United States Patent |
9,189,970 |
Seo , et al. |
November 17, 2015 |
Miniature of washing machine for exhibition
Abstract
A miniature of a washing machine for exhibition includes: a
casing having an opening at an upper portion thereof; a door for
opening and closing the opening; a tub fixedly installed within the
casing; a drum rotatably installed within the tub; a driving motor
installed at an outer side of the tub; an electric motor unit
transferring rotary force of the driving motor to the drum; a tub
cover installed at an upper portion of the tub and including a
guide unit for guiding water, which is discharged upwardly along an
inner wall surface of the tub, to the inner side of the tub when
the drum is rotated; and a light emitting unit irradiating light to
the interior of the tub.
Inventors: |
Seo; Inhyouk (Gyeongnam,
KR), Kim; Hyejeong (Gyeongnam, KR) |
Applicant: |
Name |
City |
State |
Country |
Type |
Seo; Inhyouk
Kim; Hyejeong |
Gyeongnam
Gyeongnam |
N/A
N/A |
KR
KR |
|
|
Assignee: |
LG Electronics Inc. (Seoul,
KR)
|
Family
ID: |
44887618 |
Appl.
No.: |
13/877,948 |
Filed: |
October 12, 2011 |
PCT
Filed: |
October 12, 2011 |
PCT No.: |
PCT/KR2011/007574 |
371(c)(1),(2),(4) Date: |
April 05, 2013 |
PCT
Pub. No.: |
WO2012/050356 |
PCT
Pub. Date: |
April 19, 2012 |
Prior Publication Data
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|
|
Document
Identifier |
Publication Date |
|
US 20130203040 A1 |
Aug 8, 2013 |
|
Foreign Application Priority Data
|
|
|
|
|
Oct 14, 2010 [KR] |
|
|
10-2010-0100528 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
D06F
35/00 (20130101); G09B 19/00 (20130101); D06F
37/42 (20130101); D06F 39/12 (20130101); D06F
2103/24 (20200201); D06F 33/47 (20200201); D06F
2105/46 (20200201); D06F 2103/40 (20200201) |
Current International
Class: |
G09B
19/00 (20060101); D06F 35/00 (20060101) |
Field of
Search: |
;434/365,382,389
;68/147 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
|
|
2335211 |
|
Aug 1999 |
|
CN |
|
2335211 |
|
Aug 1999 |
|
CN |
|
1512002 |
|
Jul 2004 |
|
CN |
|
101701403 |
|
May 2010 |
|
CN |
|
2004164397 |
|
Jun 2004 |
|
JP |
|
1020000015280 |
|
Aug 1998 |
|
KR |
|
1998-0064041 |
|
Nov 1998 |
|
KR |
|
2000-0015280 |
|
Mar 2000 |
|
KR |
|
2003-0045445 |
|
Jun 2003 |
|
KR |
|
2006-0099831 |
|
Sep 2006 |
|
KR |
|
630892 |
|
Oct 2006 |
|
KR |
|
Other References
PCT International Search Report dated May 3, 2012 for Application
No. PCT/KR2011/007574, 3 pages. cited by applicant .
Office Action dated Dec. 11, 2014 issued in corresponding Chinese
Patent Application No. 201180049538.6, including English
translation, 16 pages. cited by applicant.
|
Primary Examiner: Yao; Sam
Assistant Examiner: Humphrey; Michael
Attorney, Agent or Firm: Fish & Richardson P.C.
Claims
The invention claimed is:
1. A miniature of a washing machine for exhibition, the miniature
comprising: a casing having an opening at an upper portion thereof;
a door configured to open and close the opening of the casing, the
door comprising a transparent panel unit that allows for visual
inspection of an interior of the casing based on the door being
closed; a tub fixedly installed within the casing; a drum rotatably
installed within the tub; a driving motor installed at an outer
side of the tub; an electric motor unit configured to transfer
rotary force of the driving motor to the drum; a first tub cover
installed at an upper portion of the tub, the first tub cover
including a guide unit configured to guide water that has, based on
the drum being rotated, discharged upwardly along an inner wall
surface of the tub toward an inner side of the tub; a light
emitting unit configured to irradiate light to an interior of the
tub, the light emitting unit being positioned at an upper side of
the first tub cover; and a second tub cover provided at an upper
side of the light emitting unit to cover the light emitting unit
and the first tub cover, wherein the first tub cover is transparent
to thereby allow the light from the light emitting unit to pass
therethrough and illuminate the interior of the drum, and wherein
the second tub cover is opaque to thereby prevent the light from
the light emitting unit from passing therethrough and directly
illuminate an outside of the casing.
2. The miniature of claim 1, wherein the first tub cover has an
annular shape having a section in a semi-circular shape.
3. The miniature of claim 2, wherein a plurality of guide vanes
having a spiral form are disposed at an inner side of the first tub
cover.
4. The miniature of claim 1, wherein a limit switch for detecting
whether or not the door is open or closed is installed at an upper
portion of the casing, and the limit switch is configured to stop
the rotation of the drum when the door is open.
5. The miniature of claim 1, wherein a tilt sensor is installed to
be protruded from a lower surface of the casing, and based on the
casing being inclined at more than a certain angle or separated by
more than a certain distance from the ground, the tilt sensor is
configured to become further protruded to stop the rotation of the
drum.
6. The miniature of claim 1, wherein the electric motor unit
comprises: a follower pulley fixed at a lower side of the drum; a
driving pulley fixed to a rotational shaft of the driving motor;
and a belt fastened between the follower pulley and the driving
pulley.
7. The miniature of claim 1, further comprising a top cover that is
provided at an upper portion of the casing, wherein the second tub
cover fills a gap between the upper portion of the tub and the top
cover to prevent water introduced into the interior of the tub from
flowing out of the tub and into the interior of the casing.
8. The miniature of claim 1, further comprising a plurality of legs
provided at a lower portion of the tub so that the tub is supported
by a bottom surface of the casing.
9. The miniature of claim 1, wherein the light emitting unit
comprises a plurality of light emitting diodes disposed on the
upper side of the first tub cover along a circumferential direction
of the tub cover.
10. The miniature of claim 1, wherein the first tub cover is made
of a transparent material so that light irradiated from the light
emitting device is diffused along the tub cover to thereby evenly
illuminate the interior of the drum.
11. A miniature of a washing machine for exhibition, the miniature
comprising: a casing having an opening at an upper portion thereof;
a door configured to open and close the opening of the casing, the
door comprising a transparent panel unit that allows for visual
inspection of an interior of the casing based on the door being
closed; a tub fixedly installed within the casing; a drum rotatably
installed within the tub; a plurality of legs provided at a lower
portion of the tub so that the tub is supported by a bottom surface
of the casing; a driving motor installed at an outer side of the
tub; an electric motor unit configured to transfer rotary force of
the driving motor to the drum; a first tub cover installed at an
upper portion of the tub, the first tub cover including a guide
unit configured to guide water that has, based on the drum being
rotated, discharged upwardly along an inner wall surface of the tub
toward an inner side of the tub; a light emitting unit configured
to irradiate light to an interior of the tub, the light emitting
unit being positioned at an upper side of the first tub cover and
comprising a plurality of light emitting diodes disposed on the
upper side of the first tub cover along a circumferential direction
of the tub cover; and a second tub cover provided at an upper side
of the light emitting unit to cover the light emitting unit and the
first tub cover, wherein the first tub cover is transparent to
thereby allow the light from the light emitting unit to pass
therethrough and illuminate the interior of the drum, the first tub
cover being made of a transparent material so that light irradiated
from the light emitting device is diffused along the tub cover to
thereby evenly illuminate the interior of the drum, and wherein the
second tub cover is opaque to thereby prevent the light from the
light emitting unit from passing therethrough and directly
illuminate an outside of the casing.
12. The miniature of claim 11, wherein the first tub cover has an
annular shape having a section in a semi-circular shape.
13. The miniature of claim 12, wherein a plurality of guide vanes
having a spiral form are disposed at an inner side of the first tub
cover.
14. The miniature of claim 11, wherein a limit switch for detecting
whether or not the door is open or closed is installed at an upper
portion of the casing, and the limit switch is configured to stop
the rotation of the drum when the door is open.
15. The miniature of claim 11, wherein a tilt sensor is installed
to be protruded from a lower surface of the casing, and based on
the casing being inclined at more than a certain angle or separated
by more than a certain distance from the ground, the tilt sensor is
configured to become further protruded to stop the rotation of the
drum.
16. The miniature of claim 11, wherein the electric motor unit
comprises: a follower pulley fixed at a lower side of the drum; a
driving pulley fixed to a rotational shaft of the driving motor;
and a belt fastened between the follower pulley and the driving
pulley.
17. The miniature of claim 11, further comprising a top cover that
is provided at an upper portion of the casing, wherein the second
tub cover fills a gap between the upper portion of the tub and the
top cover to prevent water introduced into the interior of the tub
from flowing out of the tub and into the interior of the casing.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a U.S. National Phase Application under 35
U.S.C. .sctn.371 of International Application PCT/KR2011/007574,
filed on Oct. 12, 2011, which claims the benefit of Korean
Application No. 10-2010-0100528, filed on Oct. 14, 2010, the entire
contents of which are hereby incorporated by reference in their
entireties.
TECHNICAL FIELD
The present invention relates to a miniature of washing machine for
exhibition and, more particularly, to a miniature of washing
machine for exhibition offered to help consumers understand
operational principles of washing machines.
BACKGROUND ART
Various types of washing machines exist according to their
operational schemes, and the difference in operational scheme is a
key factor for determining the performance and purpose of washing
machines Thus, if he or she understands how a washing machine
operates in purchasing a washing machine, it would be much helpful
for consumers to select a washing machine having his desired
purpose and performance. This is also very important for the seller
side in that consumer's claims or request for refunding because of
a misunderstanding about the performance of washing machines can be
reduced.
However, the operational schemes of washing machines may be
discernible by the external appearance but may not in some cases.
In particular, the operational schemes and features of washing
machines may be confirmed by actually driving them, but it is
actually impossible to drive washing machines in a shop having a
limited area in which a variety of selections of washing, machines
are exhibited. Thus, the reality is that consumers indirectly
infers the features of washing machines through the features
described in catalogues or customers' evaluation posted on the
Internet notice boards or the like.
Thus, one of the methods for resolving such a problem is using a
miniature having the features of a corresponding product. A
miniature of a life-size product occupies a considerably small
space compared with the life-size product may only need to show the
operation schemes without having to exhibit the performance of the
life-size products. Thus, it can effectively make consumers
understand the characteristics of the corresponding product at a
low cost.
In this respect, however, in the process of miniaturizing the
life-size product, the function of the corresponding product may
not be implemented or an excessive amount of cost may be incurred.
In particular, in case of a washing machine having a function of
improving washing performance by jetting washing water downwardly
during a washing process, complicated constituent components such
as a pump, a valve, or the like, must be expressed to implement the
washing water jetting unit, but in actuality, it is impossible to
install such components within the miniature.
DISCLOSURE
Technical Problem
In this respect, however, in the process of miniaturizing the
life-size product, the function of the corresponding product may
not be implemented or an excessive amount of cost may be incurred.
In particular, in case of a washing machine having a function of
improving washing performance by jetting washing water downwardly
during a washing process, complicated constituent components such
as a pump, a valve, or the like, must be expressed to implement the
washing water jetting unit, but in actuality, it is impossible to
install such components within the miniature.
An aspect of the present invention provides a miniature of a
washing machine for exhibition capable of easily implementing a
flow of water jetted downwardly (i.e., from an upper side to a
lower side) in a washing tub.
Technical Solution
According to an aspect of the present invention, there is provided
a miniature of a washing machine for exhibition, including: a
casing having an opening at an upper portion thereof; a door for
opening and closing the opening; a tub fixedly installed within the
casing; a drum rotatably installed within the tub; a driving motor
installed at an outer side of the tub; an electric motor unit
transferring rotary force of the driving motor to the drum; a tub
cover installed at an upper portion of the tub and including a
guide unit for guiding water, which is discharged upwardly along an
inner wall surface of the tub, to the inner side of the tub when
the drum is rotated; and a light emitting unit irradiating light to
the interior of the tub.
In implementing a flow of water jetted to the interior of the drum
from an upper side of the tub, an effect that water is jetted to
the interior of the tub by using centrifugal force applied to water
accommodated in the interior of the tub according to the rotation
of the drum can be obtained without using a pump or a valve.
Namely, when the drum is rotated, water supplied to the interior of
the tub is rotated and centrifugal force is applied to the water.
When the centrifugal force is gradually increased, water is moved
to an upper side of the tub along the inner wall of the tub so as
to be introduced into the tub cover, and then, supplied to the
interior of the tub again by the tub cover.
Thus, without a pumping unit, water may be supplied into the tub,
and the effect that water is jetted from the upper portion of the
tub can be obtained by appropriately determining the rotation speed
of the drum.
Here, the tub cover may have an annular shape having a section in a
semi-circular shape. Here, a plurality of guide vanes having a
spiral form may be formed at an inner side of the tub cover to
allow discharged water to be discharged in a spiral form.
A limit switch for detecting whether or not the door is open or
closed may be installed at an upper portion of the casing, and when
the door is open, the rotation of the drum may be stopped. A
certain switch may be used as the limit switch. For example, a
switch which is pressed by a portion of the door when the door is
closed may be employed. Accordingly, the drum can be rotated only
when the door is closed, thereby preventing water within the drum
from splashing to the outside.
Besides, a tilt sensor may be installed to be protruded from a
lower surface of the casing. When the casing is inclined at more
than a certain angle or separated by more than a certain distance
from the ground, the tilt sensor may be protruded to stop the
rotation of the drum. Accordingly, the washing machine miniature
can be operated only when stably supported.
Meanwhile, the tub cover may be made of a transparent material, and
a light emitting unit may be installed at an upper portion of the
tub cover. Accordingly, the tub cover may serve as a light guide
unit dispersing light generated by the light emitting unit.
Here, a second tub cover covering the light emitting unit may be
additionally provided.
The electric motor unit may include: a follower pulley fixed at a
lower side of the drum; a driving pulley fixed to a rotational
shaft of the driving motor; and a belt fastened between the
follower pulley and the driving pulley.
According to embodiments of the present invention, the flow of
water jetted into the drum from the upper side of the tub can be
easily implemented without using components such as a pump, a
value, or the like.
The foregoing and other objects, features, aspects and advantages
of the present invention will become more apparent from the
following detailed description of the present invention when taken
in conjunction with the accompanying drawings.
DESCRIPTION OF DRAWINGS
FIG. 1 is a perspective view showing an external appearance of a
miniature of a washing machine (or a washing machine miniature)
according to an embodiment of the present invention;
FIG. 2 is a perspective view showing a state in which a door is
open in the washing machine miniature illustrated in FIG. 1;
FIG. 3 is a sectional view taken along line A-A' in FIG. 1;
FIG. 4 is a perspective view showing a tub cover in FIG. 1;
FIG. 5 is a perspective view showing a portion of a tilt sensor of
the washing machine miniature illustrated in FIG. 1; and
FIG. 6 is a perspective view showing the rear side of the washing
machine miniature illustrated in FIG. 1.
MODE FOR INVENTION
A miniature of a washing machine according to an embodiment of the
present invention will now be described in detail with reference to
the accompanying drawings.
FIG. 1 is a perspective view showing an external appearance of a
miniature of a washing machine (or a washing machine miniature)
according to an embodiment of the present invention, and FIG. 2 is
a perspective view showing a state in which a door is open in the
washing machine miniature illustrated in FIG. 1.
With reference to FIGS. 1 and 2, a miniature 100 of a washing
machine (or a washing machine miniature 100) according to an
embodiment of the present invention has a shape of rectangular
parallelepiped as a whole, and has a similar form as that of a
general top-load type washing machine. In detail, the washing
machine miniature 100 includes a box-like shaped casing 102, and a
top cover 106 covers an upper portion of the casing 102. A control
panel unit 104 having a form obtained by reducing a control panel
of an actual washing machine is formed on a rear upper portion of
the top cover 106, increasing the realistic sense. In addition, a
printed circuit board (PCB) (to be described) on which a controller
of a driving motor is mounted is installed within the control panel
unit 104.
An opening is formed at the upper portion of the top cover 106, and
the opening is opened and closed by a door 110. The door 110
includes a door frame 112 having one end hinge-coupled to the top
cover 106 and a transparent panel unit 114 having an outer
circumferential portion surrounded by the door frame 112. The
interior of the casing 102 can be checked through the transparent
panel unit 114 without having to open the door 110.
With reference to FIG. 2, a switch hole 108 is formed on a front
upper portion of the top cover 108, and a projection 116 is formed
on a portion, of a rear surface of the door 110, which faces the
switch hole 108. Thus, when the door 110 is closed, the projection
116 is inserted into the switch hole 108 to press a limit switch
(not shown) installed within the switch hole 108, to allow the
controller to check an opening or closing state of the door 110.
Information regarding the opening and closing of the door 110 is
transferred to the controller (not shown), so that when the door
110 is open while a drum (to be described) is being rotated, the
operation of the drum can be stopped.
FIG. 3 is a sectional view showing an internal structure of the
washing machine miniature 100. With reference to FIG. 3, a
cylindrical tub 120 is fixedly installed within the casing 102, and
a driving unit installation region 130 is connected to a lower
surface of the tub 120. Legs 132 are installed on a lower portion
of the driving unit installation region 130, whereby the driving
unit installation region 130 and the tub 120 are supported by the
bottom surface of the casing 102.
A space 134 is formed at one side of the driving unit installation
region 130, and a driving motor 140 is installed in the space 134
such that a rotational shaft 142 of the driving motor 140 faces
downwardly. A driving pulley 144 is installed at an end portion of
the rotational shaft 142. The driving pulley 144 is connected with
a follower pulley 154 (to be described) by a belt 146.
Meanwhile, the tub 120 is formed to accommodate water therein. A
drum 150 is rotatably installed within the tub 120. A plurality of
through holes are formed on the drum 150 to allow water supplied to
the interior of the tub 120 to be introduced into the drum 150. A
rotational shaft 152 is installed at a lower portion of the drum
150, and the follower pulley 154 is fixed to an end portion of the
rotational shaft 152. A shape similar to a pulsator of a general
washing machine is formed on the bottom surface of the drum 150 in
order to accelerate rotation of water supplied to the interior of
the tub 120 when the drum 150 is rotated.
The drum 150 is formed to have an inner diameter smaller than that
of the tub 120, so there is a certain gap between the drum 150 and
the tub 120. In order to cover the gap, a tub cover 160 is
installed on the tub 120.
As shown in FIG. 4, the tub cover 160 has an annular shape to
surround an upper end portion of the tub 120 and has a section in a
semi-circular shape. The inner diameter of the tub cover 160 is
smaller than that of the drum 150, so a central end portion of the
tub cover 160 is positioned at the inner side of the drum 150. The
tub cover 160 is made of a transparent material, and a light
emitting device 170 in which a plurality of LEDs are disposed in a
circumferential manner is installed at an upper side of the tub
cover 160.
A second tub cover 180 is installed at an upper portion of the
light emitting device 170. Unlike the tub cover 160, the second tub
cover 180 is made of an opaque material to block or prevent light
irradiated from the light emitting device 170 from being directly
transferred to consumers. In addition, the second tub cover 180
also serves to make the light emitting device 170 stably supported
at the upper portion of the tub cover 160. Also, the second tub
cover 180 fills a gap between the upper portion of the tub 120 and
the top cover 106 to prevent water introduced into the interior of
the tub 120 from flowing to the interior of the casing 102. To this
end, an O-ring (not shown) may be installed on a lower surface of
the top cover 106 and compressed with the second tub cover 180.
As shown in FIG. 4, a total of four guide vanes 162 are formed at
an inner side of the tub cover 160. The guide vanes 162 demarcates
the interior of the tub cover 160 into four spaces, and each of the
guide vanes 162 has a spiral shape.
The operation of the washing machine miniature 100 according to an
embodiment of the present invention will now be described with
reference to FIGS. 3 and 4. In FIG. 3, a solid line indicated by
the arrow denotes a water level of water filled in the tub 120.
In a state in which the drum 150 is stationary, as illustrated, a
planar water level is maintained, but when the drum 150 is rotated,
water filled in the tub swirls. When the water swirls, water is
pushed to an outer side in a radius direction due to the operation
of centrifugal force, but here, since the movement of water is
hampered by an inner wall of the tub 120, water is lifted along the
tub 120.
When the rotation speed of the drum 150 is increased, water
adjacent to the inner wall of the tub 120 is discharged to an upper
side of the tub 120 as indicated by the dotted line and then
introduced into the tub cover 160. Here, since water is rotated in
the same direction as the rotation direction of the drum 150, in
actuality, the water is introduced in the direction of dotted lines
into the interior of the tub cover 160.
The thusly introduced water flows along the internal space of the
tub cover 160, and then, discharged toward the center of the tub
cover 160 along the surface of the guide vanes 162. Thus, the
effect that water is jetted from four points can be obtained
without having to install a pump, a nozzle, or the like.
Meanwhile, while the drum 150 is being rotated, the light emitting
device 170 is also operated. As mentioned above, since the tub
cover 160 is made of a transparent material, light irradiated from
the light emitting device 170 is diffused along the tub cover 160,
evenly illuminating the internal space of the drum 150.
Here, the tub cover 160 may not necessarily have the semi-circular
shaped section. Namely, it may have a certain shape, e.g., a sloped
shape toward the central axis of the drum 150, to allow the
discharged water to be introduced again to the drum 150.
As described above, when the door 110 is open while the drum 150 is
being rotated, the foregoing limit switch detects it and the
rotation of the driving motor 140 is stopped. Besides, if the drum
150 is rotated in a state in which the casing 102 is inclined at
more than an certain angle or the casing 102 is separated from the
ground, the water within the drum is likely to flow out, so a tilt
sensor 190 for sensing whether or not the washing machine miniature
100 falls down may be provided on a lower surface of the casing 102
as shown in FIG. 5.
Namely, the tilt sensor 190 may be installed on the lower surface
of the casing 102 by using a coil spring or an elastic unit such
that it is provided from the lower surface of the casing 102.
Accordingly, if the distance between the lower surface of the
casing 102 and the ground is increased, the tilt sensor 190 is
outwardly protruded according to the elastic force of the elastic
unit, and when the tilt sensor 190 is protruded to be more than an
certain level, contacts of the switch installed in the casing 102
are separated to stop the driving of the driving motor 140. In this
manner, when the casing 102 is inclined at more than a certain
angle or becomes away from the ground, the rotation of the drum 150
can be stopped.
Meanwhile, in order to supply water to the interior of the tub 120,
the door 110 may be opened and water may be directly supplied to
the interior of the drum 150. When water is intended to be
discharged, a drain pipe 192 connected with the interior of the tub
120 may be used. With reference to FIG. 6, one end of the drain
pipe 192 communicates with the interior of the tub 120, and the
other end of the drain pipe 192 is positioned to be adjacent to the
rear surface of the casing 102. here, a stopper 190 is installed on
the other end of the drain pipe 192, and the stopper 190 is mounted
at an outer portion of the rear surface of the casing 102. Thus,
with in a state in which the stopper 190 is fixed to the casing
102, the washing machine miniature 100 is operated, and when water
is intended to be discharged, the stopper 190 may be separated and
the drain pipe 192 fixed to the stopper 190 may be drawn out to
discharge water therethrough.
As the present invention may be embodied in several forms without
departing from the characteristics thereof, it should also be
understood that the above-described embodiments are not limited by
any of the details of the foregoing description, unless otherwise
specified, but rather should be construed broadly within its scope
as defined in the appended claims, and therefore all changes and
modifications that fall within the metes and bounds of the claims,
or equivalents of such metes and bounds are therefore intended to
be embraced by the appended claims.
* * * * *